404423132 has 36 divisors (see below), whose sum is σ = 791433720. Its totient is φ = 180290304.

The previous prime is 404423119. The next prime is 404423147. The reversal of 404423132 is 231324404.

It is a junction number, because it is equal to n+sod(n) for n = 404423098 and 404423107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12758 + ... + 31170.

It is an arithmetic number, because the mean of its divisors is an integer number (21984270).

Almost surely, 2^404423132 is an apocalyptic number.

It is an amenable number.

404423132 is a deficient number, since it is larger than the sum of its proper divisors (387010588).

404423132 is a wasteful number, since it uses less digits than its factorization.

404423132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18470 (or 18451 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 404423132 is about 20110.2742895267. The cubic root of 404423132 is about 739.5121766613.

Adding to 404423132 its reverse (231324404), we get a palindrome (635747536).

The spelling of 404423132 in words is "four hundred four million, four hundred twenty-three thousand, one hundred thirty-two".